remove array value by index javascript code example

Example 1: locate and delete an object in an array

// we have an array of objects, we want to remove one object using only the id property
var apps = [{id:34,name:'My App',another:'thing'},{id:37,name:'My New App',another:'things'}];
 
// get index of object with id:37
var removeIndex = apps.map(function(item) { return item.id; }).indexOf(37);
 
// remove object
apps.splice(removeIndex, 1);

Example 2: pop up element from specific index in array

let items = ['a', 'b', 'c', 'd'];
let index = items.indexOf('a')
let numberOfElementToRemove = 1;
if (index !== -1) { items.splice(index,numberOfElementToRemove)}